Scale-measure



(N Model.) v E. KARSHNER.

SCALE MEASURE.

No. 526,411.8. Patented Sept.25, 1894.

N @uw and exact description,

' NirnD STATES )PATENT Gratos.

SCALE-IVI EASU RYE.

SPECIFICATION forming partof Letters Patent No. 526,448, dated September 25, 1894..

Application ned April 2i, 1894.

To a/ZZ whom it may concern:

Se it known that I, ELMER KAnsoHNER, a citizen of the United States, anda resident of Williamsporn Lycoming county, State of Pennsylvania, have in vented certain new and useful Improvements-in Scale-Measures; and my preferred manner of carrying out the invention is set forth in the following full, clear, terminating with a claim particularly specifying the novelty.

This invention relates to measuring instruments, and more especially to that class thereof known asscale measures; and the object of the same is to eect certain improve ments in measures of this character.

To this end the invention consists in the details of construction hereinafter more fully described and claimed, and as shown in the drawings, wherein- Figure l is a perspective view of a ten-foot pole embodying my invention. Fig. 2 is an enlarged perspective detail of the male end of one member. Fig. 3 is a similar detail of the female end of another member.

Referring to the said drawings, each of the letters C designates a section preferably composed of wood or other light material, and

preferably square or angular so as to produce corners such as are useful on measures of this character, although the number of dat faces possessed by the device is a matter of no great moment. There are preferably tive of these sections, each being about two feet 1n length and marked on one or more faces with lines to indicate feet and inches; and to the outer extremities of the endmost sections are rigidly secured metal caps A having flat 4metal ends a, whereby the ends and corners of the measure are prevented from becoming rounded and worn in use. With the exception of said outer extremities, each end of the wooden body of each section is driven into and secured rigidly within ametal sleeve G which is preferably of brass and conforms with the shape of the body C-the latter extending about halfway through the sleeve and terminating at the dotted line g as best seen in Figs. 2 and 3. Into the outer end of the sleeve at one end of each section is passed a plug H which rests against the end of the wooden body C, This plug is itself tubular as seen in Fig. 2, and its exterior configuration serai No. 508.490. KNO more.)

`and its length are such that it will fit accurately within the sleeve G at the extremity of the section next adjacent. The letter E designates a latch located wholly within this hollow plug and having its body secured therein by a screw e extending through the sleeve and plug and also holding these parts rigidly but detachably connected, while its operative tip or end is normally projected outward through a hole in one face of the plug H at a point about midway between the outer ends of the sleeve G and plug H. In the corresponding side of the other sleeve G into which this plug is to pass, is formed a hole F of a size to receive the operative tip of the latch; but said tip does not project through this hole F so that it might interrupt the passage of a pen or pencil along and `against the adjacent flat face of the entire measure. It will be obvious that it isnecessary to have the tip E engage the hole F exactly at the moment that the outer ends of the two sleeves contact, so that the scales on the two connected sections will run past the joint andyet present an accurate measurement throughout their entire lengths.

I consider the specific manner of arranging the latch within the hollow plug and fastening it therein by a screw which also fastens the plug within the sleeve, to be a point of special advantage in this connection and in a device of this character. The plug is hollow throughout its entire length. Hence no dirt can accumulate therein,because the ordinary handling of the sections Will dislodge it. The inner end of the plug rests firmly against the end of the wooden body whereby a forcible assembling ofsections and` sudden bringing of the ends of the sleeves together will not drive them onto .the wooden parts, because the ends of the hollow plug just at this time come against the ends of the wooden parts as will be clear. Furthermore, the single screw e serves te connect the plug with the sleeve and also to hold the latch in place.

When not in use the several sections are disconnected and can obviously be stored in a space only two feet long or a trifle over two feet in length because the plugs H project beyond the actual ends of the sections. To

bring this measure into operative condition, the plugs are properly inserted into the open ends of the corresponding sleeves G until the operative ends ofthe latches strike the ends of the sleeves, the latches are depressed with the thumb, and the parts then pushed to- 5 gether until the ends of the metal sleeves strike each other, at which time the tip of each latch will automatically engage its proper opening F to lock the parts firmly together and the whole stick will form an accurate 1o measure past all points of connection between the sections. To disconnect the parts it is only necessary to depress the tip of the latch E with the finger until it is moved out of engagement with the hole F. 5 15 When in use the tip of the latch stands eX- actly flush with the outer face of the sleeve around the hole F, and hence forms no obstruction to ruling or other uses to which the measure may be put. I do not limit myself zo to the application of this idea on ten-foot measures, to the making of the sections two feet in length, to the use of the device for feet and inches only, nor to the precise details of construction `herein shown and described, z 5 as considerable change therein may be made without departing from the principle of my invention.

What is claimed as new is The herein described scale measure made 5o in sections cach consisting of a square wooden body, square metallic sleeves rigidly secured on the ends of the body and projecting beyond the same, each section being of a predetermined length between the outer ends of its sleeves and the whole being marked exterlorly 3 5 on its various faces with scales, a hollow metal plug fitting within the sleeve against the body7 at one end of the section and projecting beyond the outer end of the sleeve, a spring latch whose body stands wholly W1 th1n 4o the plug and whose operative tip proJects 4p normally through a hole in one side of the protruding end of the plug, and a single screw fastening the inner end of the latch within the plug and the latter within the sleeve, said 4 5 plug being of a size to accurately t the opposite sleeve of the complementary section and this sleeve being provided in oneside with-a hole so located as to receive the tip of the latch when the ends of the two metal 5o sleeves contact but not to permit said tip to project beyond the iiat outer face of the sleeve, as and for the purpose set forth.

In testimony whereof I have hereunto subscribed my signature on this the 16th day of 55 April, A. D. 1894.

ELMER KARSCHNER.

Witnesses:

FRANK KEsTER, G. C. CooNs. 

